耐温230℃的新型超高温压裂液体系  

A New Fracturing Fluid with Temperature Resistance of 230 ℃

作　　者：杨振周 刘付臣 宋璐璐 林厉军 YANG Zhenzhou;LIU Fuchen;SONG Lulu;LIN Lijun(CNPC Drilling Research Institute,Beijing 102206;CNPC Houston R&D Center,Beijing 100028)

机构地区：[1]中国石油集团工程技术研究院,北京102206 [2]中国石油休斯敦技术研究中心,北京100028

出　　处：《钻井液与完井液》2018年第1期101-104,共4页Drilling Fluid & Completion Fluid

基　　金：中国石油天然气集团公司重大科技专项“储层改造工作液及关键工具研发”(2013E-3807)资助。

摘　　要：目前使用的天然植物胶压裂液,耐温极限约为177℃。为了解决压裂液的耐超高温问题,通过大量的室内实验,筛选出新型的超高温稠化剂、耐高温的锆交联剂、高温稳定剂和有效的破胶剂,形成了一种耐温在200~230℃的超高温压裂液体系。实验结果表明,这些添加剂协同作用下,形成适用于地层温度高于常规冻胶耐温极限的超高温聚合物压裂液体系,该压裂液在230℃时具有很好的耐温耐剪切性能,并且显著降低了聚合物用量,可以实现完全破胶,对支撑剂导流层的伤害小。The natural vegetable gum fracturing fluid presently in use works effectively at temperatures up to 177℃.To fracture formations with higher temperatures,a fracturing fluid with temperature resistance o f 200-230℃has been developed with ultrahigh temperature thickening agent,high temperature resistant zirconium crosslinking agent,high temperature stabilizer and efficient gel breaker through large quantity of laboratory experiments.The experimental results showed that,under the synergetic effect of these additives,the fracturing fluid is suitable for use in fracturing formations whose temperatures are higher than the temperature limit of conventional gels.The fracturing fluid has good shear-resistance property at high temperatures up to 230℃and the polymer consumption for formulating the fracturing fluid is obviously reduced.Complete gel breaking can be realized with the fracturing fluid,and damage to the fluid conducting formations with proppants is low.

关 键 词：压裂液 超高温 合成聚合物 交联剂 破肢剂 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]